在[(UO2)3(PO4)O(OH)(H2O)2](H2O)结构中存在一种前所未有的磷酸铀酰骨架。

An unprecedented uranyl phosphate framework in the structure of [(UO2)3(PO4)O(OH)(H2O)2](H2O).

作者信息

Burns Peter C, Alexopoulos Cara M, Hotchkiss Peter J, Locock Andrew J

机构信息

Department of Civil Engineering and Geological Sciences, University of Notre Dame, 156 Fitzpatick Hall, Notre Dame, IN 46556, USA.

出版信息

Inorg Chem. 2004 Mar 22;43(6):1816-8. doi: 10.1021/ic0348547.

DOI:10.1021/ic0348547

PMID:15018494

Abstract

The new uranyl phosphate (UO2)3(PO4)O(OH)(H2O)2 (1) with an unprecedented framework structure has been synthesized at 150 and 185 degrees C. The structure (tetragonal, P4(2)/mbc, a = 14.015(1) A, c = 13.083(2) A, V = 2575.6(4) A(3), Z = 8) contains uranyl phosphate chains composed of uranyl pentagonal and hexagonal bipyramids and phosphate tetrahedra linked by sharing of polyhedral edges. The uranyl phosphate chains are aligned both along [100] and [010] and are linked into a novel framework structure involving channels along [001]. Topologically identical chains occur linked into sheets in more than a dozen uranyl phosphate minerals, but these chains have never been observed in opposing orientations and linked into a framework as in 1.

摘要

新型磷酸铀酰(UO2)3(PO4)O(OH)(H2O)2 (1)具有前所未有的骨架结构，已在150和185摄氏度下合成。其结构（四方晶系，P4(2)/mbc，a = 14.015(1) Å，c = 13.083(2) Å，V = 2575.6(4) Å(3)，Z = 8）包含由铀酰五角双锥和六角双锥以及通过共享多面体棱边相连的磷酸四面体组成的磷酸铀酰链。磷酸铀酰链沿[100]和[010]方向排列，并连接成一种新型骨架结构，其中包含沿[001]方向的通道。拓扑结构相同的链在十几种磷酸铀酰矿物中连接成片，但从未观察到这些链以相反的方向连接成如1中所示的骨架结构。